Watch-maker s staking and punching tool



(No Model.)

B. RIVETT. WATCH MAKBRS STAKING AND PUNGHING TOOL.

Patented Apr 15,1890.

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UNITED STATES ATENT Prion.

EDIVARD RIVET", OF BOSTON, MASSACHUSE IS.

WATCH-MAKERS STAKINGAND PUNCHING TOOL.

SPECIFICATION forming part of Letters Patent No. 425,522, dated April 15, 1890.

Application filed September 5, 1889. Serial No. 328,040. (No model.)

To all whom it may concern.-

Be it known that I, EDWARD Rrvnrr, a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Combination Staking-Tools and lvIainspring-Punches, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to improvements in staking-tools for jewelers use; andit consists of a staking and punching tool combined, which is constructed as follows, reference being had to the accompanying drawings, wherein- Figure 1 represents a perspective View of the improved tool. Fi g. 2 represents a top view of the same. Fig. 3 represents across-section on the line X X, shown in Fig. 2; and Fig. 4 represents a sectional View of a modification of the invention.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings.

c is the base, having the goose-neck frame a terminating as a vertical hollow cylinder or toolguide a, adapted to receive the punch or stake b, as is common in devices of this kind.

0 is the perforated bed-plate resting on top of the base a. and provided with a series of perforations c c c, of varying diameters, each of which coincides with the position of the punch or stake b when the bed-plate O is rotated around its axis. The plate 0 is pivoted on the vertical pin (1, which passes through a vertical perforation of the base a, and is provided in its upper end with a head cl, resting, preferably, in a recess in the top of the plate C, as shown. The lower end cl" of the pin cl is reduced in diameter and terminates as a head or collar d as shown in Fig. .3.

In connection with the perforated plate 0 and pin (Z, I use an adjustable locking device for the purpose of securing said plate 0 to the base a after said plate has been adjusted thereon relative to the punch or stake I). Said look ing device consists of a lever e, forked or otherwise loosely connected in one end at e to the pin (1, and provided in its other end with a screw fpassing loosely through a vertical perforation in the base a, and having its lower end screwed in a screw-threaded perforation in the said lever e, as shown in Fig. 3.

f is a serrated head or knob in the upper end of the screw f, which head bears against the top of the base a, as shown.

a is a fulcrum or projection on the under side of the base a, against which the lever e is brought to bear when the clamping-screw f f is tightened. It will thusbe seen that by loosening the screw f f the downward pressme on the pin dis relieved, allowing the perforated plate to be adjusted for the purpose of bringing any one of its perforations c c centrally below the punch or stake b, after which said plate is firmly secured in such position against the top of the base a by simply tightening the clamping-screw ff.

In combination with the staking-tool above described, I use a punching device for the purpose of perforating mainsprings for watches which is constructed as follows: In suitable guides a a on the goose-neck frame a is vertically movable the plunger having a series of punches g g in its lower end. Below said punches is secured to the top of base a the die-plate 72, having vertical perforations h h corresponding to the punches g g, as shown in Fig. 1.

I prefer to make parallel marks or indentures h" h" h on the upper surface of the base a in a line with each of the perforations h h, as shown in Figs. 1 and 2, so as to aid in guiding the mainspring to be punched to the respective die in the series.

The plunger 9 is moved up and down by means of a hand-lever 70, secured to a horizontal shaft 70, journaled in the goose-neck a, and having secured to it a cam or eccentric it, working in a slot g" in the plunger g, as shown in the drawings.

The staking-tool may be made with or without the punching device, and when not provided with the latter I prefer to arrange the lever c centrally below the goose-neck frame a and to locate the serrated knob or head f of the clamping-screw) in a cut-away portion of the goose-neck frame a, as shown in Fig. 4.. In such case the head or knob f is to be large enough in diameter to extend beyond the sides of the frame a to enable it to be ICQ consisting of a staking device and independent mainspring-punching device, combined and arranged substantially as and for the purpose set forth. I

In testimony whereof'I have signed my name to this specification, in the presence of two subscribing witnesses, on this 3d day 20 of September, A. D. 1889.

EDWARD RIVETT,

WVitnesses:

ALBAN ANDREN, MART A J. JACKSON. 

